Chris Hawkesworth

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Christopher John Hawkesworth , called Chris Hawkesworth (born December 18, 1947 in Khartoum ), is a British geochemist (isotope geochemistry) and geologist. He is a professor at St. Andrews University .

Hawkesworth grew up in Ireland. He studied at Trinity College in Dublin (Bachelor 1970) and received his doctorate from Oxford University in 1974 with a thesis that was created as part of the development of a thermal model of the orogen of the Eastern Alps (southeast corner of the Tauern window). From 1975 he did research at the University of Leeds and from 1978 he was a lecturer at the Open University , where he set up a geochemical isotope laboratory in 1980 and became professor of geochemistry in 1988. From 2000 he was professor at the University of Bristol and there director of the science faculty (Science Faculty). He has been Deputy Principal and Vice-Principal of Research at the University of St Andrews since 2009 .

He was a Founding Fellow at the University of Auckland in 1995 and a visiting scholar at Stanford University in 1986 .

He used geochemical methods to investigate the processes in volcanic magmas and the mass balance in subduction zones and is concerned with the formation and development of the continental crust . He investigated the conditions of violent meteorite bombardments on the crust and large melts that led to the breaking of the supercontinent in the past. In addition, he investigates the interactions between biological and inorganic geochemical processes in the early Earth and studies age determinations with radioactive isotopes in general, for example in connection with the extension of the temporal range of radiocarbon dating by studying stalactites in the Bahamas. He also studied climate changes over the past 150,000 years using the isotope content of pollen in cave sediments.

According to Hawkesworth and colleagues (due to the elevated mantle temperature at the time), the majority of the earth's crust only formed from oceanic crust in the period from 4.5 to 3 billion years ago.

In 2012 he received the Wollaston Medal . In 2008 he received the Royal Society's Wolfson Merit Award . He is a Fellow of the Royal Society (2002) and the Royal Society of Edinburgh (2012) as well as the American Geophysical Union, whose Daly Lecture he gave in 2002. In 2002 he received the Schlumberger Medal of the Mineralogical Society. He received the Major John Coke Medal from the Geological Society of London and is an honorary doctorate from the University of Copenhagen. He is a Fellow of the Geochemistry Society and the European Association for Geochemistry. He is the author of over 280 publications and supervised 57 doctoral students (2009).

He is co-editor of the journals Geology and Earth and Planetary Science Letters.

Hawkesworth is married with one daughter.

Fonts

  • with Geoff Brown, Chris Wilson (editor) Understanding Earth - a new synthesis , Cambridge University Press 1992 (in it with Peter van Calsteren Geological Time )
  • with Robert Stephen John Sparks (Editor) The state of the planet: frontiers and challenges in geophysics , American Geophysical Union 2004
  • with MJ Norry (editor) Continental basalts and mantle xenoliths , Shiva Publ. 1983
  • with CMR Fowler, CJ Ebinger (editor) The early Earth: physical, chemical, and biological development , Geological Society, London and Tulsa 2002
  • with MA Menzies (Editor) Mantle metasomatism , Academic Press 1987
  • with AIS Kemp Evolution of the continental crust , Nature, Volume 443, 2006, pp. 811-817, abstract

Web links

Individual evidence

  1. ↑ Often cited by CJ Hawkesworth
  2. ↑ for example JR Darling, Hawkesworth, PC Lightfoot, CD Storey, E. Tremblay Isotopic heterogeneity in the Sudbury impact melt sheet , Earth Planet. Sci. Lett., Volume 289, 2010, pp. 347-356, Darling, Hawkesworth, Storey Impact melt sheet zircons and their implications for the Hadean crust , Geology, Volume 37, 2009, pp. 927-930
  3. ↑ A. Kemp, Hawkesworth, BA Paterson, PD Kinny Episodic growth of the Gondwana supercontinent from hafnium and oxygen isotopes in zircon , Nature, Volume 439, 2006, pp. 580-583, abstract
  4. ↑ DL Hoffmann, Hawkesworth et al. a. Towards radiocarbon calibration beyond 28 ka using speleothems from the Bahamas , Earth and Planetary Science Letters, Volume 289, 2010, pp. 1–10, comparison with uranium-thorium dating, where they found anomalous elevated C-14 values ​​in 2001 by Warren Beck ( Physics World 2001 ) corrected.
  5. Jump up ↑ Bruno Dhuime, Peter A. Cawood, Hawkesworth A Change in the Geodynamics of Continental Growth 3 Billion Years Ago , Science, Volume 235, 2012, pp. 1334-1336
personal data
SURNAME Hawkesworth, Chris
ALTERNATIVE NAMES Hawkesworth, Christopher John (full name)
BRIEF DESCRIPTION British geochemist (isotope geochemistry) and geologist
DATE OF BIRTH December 18, 1947
PLACE OF BIRTH Khartoum